Triple Eccentric Metal Seated Butterfly Valve

Product Overview

The Triple Eccentric Metal Seated Butterfly Valve is a high performance valve designed for demanding industrial applications requiring reliable sealing and resistance to high temperatures and pressures. Its unique triple eccentric structure ensures zero leakage and minimal wear, making it ideal for critical systems in industries such as petrochemical, power generation, metallurgy and municipal.

Three eccentric structure and working principle

Triple eccentric construction refers to the three critical offset positions in valve design.

1. First eccentricity: The valve stem is positioned slightly off the centerline of the valve body. This reduces direct friction between the valve flap and seat during operation.

2. Second offset: The valve stem is offset from the centerline of the pipe. This offset allows the valve flap to rotate independently, further reducing wear and friction on the sealing surfaces.

3. Third Eccentricity: The sealing surfaces of the valve flaps are machined into a taper, forming an angle that eliminates contact between the sealing surfaces when the valve opens. This contact occurs only at the final stage of closure, ensuring a tight and reliable seal.

How it works:
When the valve is activated, the triple eccentric design ensures smooth flap movement without scraping or dragging the seat. The contact surfaces of the tapered metal seat and flap engage only during closing, creating a uniform and reliable seal under high pressure and temperature conditions. This design minimizes wear, extends valve life, and maintains seal integrity over long periods of use.

Product Characteristics

Three eccentric structure: to ensure zero friction between the valve flap and seat, minimize wear and prolong the service life of the valve.

Metal-to-metal seals: provide excellent resistance to high temperatures, high pressures and abrasive media.

Bi-directional sealing: Ensures reliable sealing in both flow directions, enhancing installation flexibility.

High performance in extreme conditions: Suitable for high pressure, high temperature environments, maintaining seal integrity and operational reliability.

Corrosion and abrasion resistance: High quality materials ensure resistance to corrosive and abrasive media.

Low Torque Operation: Unique design minimizes operating torque, reducing actuator size and energy consumption.